The Drill Doctor 350x is a quality crafted, trusted device for any drill user from a full time carpenter, to a hobbyist tinkering in his free time. This wonderful machine the DD350x is an easy to use compact accessory that sits easily out of the way until needed with it s slim conservative design. The DD350x Take drill bits from sizes 3/32 all the way to 1/2 and sharpens them back to a perfect point so you can continue to work with speed an ease. Take a diamond sharpener to each of your drill bits that performs the perfect job at replacing that like new edge.